/Engine/Source/Runtime/Datasmith/CADKernel/Public/CADKernel/Topo/TopologicalLoop.h
The Edge is split in two edges : Edge + NewEdge
void SplitEdge ( [FTopologicalEdge](API\Runtime\CADKernel\CADKernel\Topo\FTopologicalEdge) & Edge, [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FTopologicalEdge](API\Runtime\CADKernel\CADKernel\Topo\FTopologicalEdge) > NewEdge, bool bNewEdgeIsFirst )